The development of information retrieval, the understanding of information retrieval

The process of organizing and storing information in a certain way and finding out relevant information according to user needs. It is also known as information storage and retrieval, and information retrieval. The search for information sprouted from the library's reference work.

The term "information retrieval" appeared in the 50s of the 20th century. Information retrieval consists of three main links: information content analysis and coding, generation of information records and retrieval identification.

Organize storage, and form an orderly collection of information in the form of documents, databases, etc. User question processing and retrieval output. The key part is the matching and selection of information questions and information sets, that is, the similarity of a given question and the records in the set is compared, and the relevant information is selected according to certain matching criteria.

It is divided into literature retrieval, data retrieval and fact retrieval according to objects; According to the equipment, it is divided into manual search, mechanical search and computer search. The service facilities composed of certain equipment and information collection are called information retrieval systems, such as punch card systems, online retrieval systems, disc retrieval systems, multi-** retrieval systems, etc. Initially applied to libraries and scientific and technical information institutions, information retrieval has gradually expanded to other areas and integrated with various management information systems.

Theories, technologies and services related to information retrieval constitute a relatively independent field of knowledge, which is an important branch of informatics and intersects with computer application technology.

Information retrieval is the main way for users to query and obtain information, and it is the method and means to find information. Information retrieval in the narrow sense refers only to information search.

That is, the user needs to use a certain method to find out the information needed from the information collection with the help of a retrieval tool. Information retrieval in a broad sense is the process of processing, sorting, organizing and storing information in a certain way, and then accurately finding out the relevant information according to the specific needs of information users. Also known as information storage and retrieval.

In general, information retrieval refers to information retrieval in a broad sense.

Information retrieval originated from the library's reference reference and abstract indexing work, and began to develop in the second half of the 19th century, and by the 40s of the 20th century, indexing and retrieval had become an independent tool and user service item for the library. With the world's first electronic computer in 1946.

Advent of computer technology.

Gradually enter the field of information retrieval, and closely integrate with the theory of information retrieval; Offline batch intelligence retrieval system, online real-time information retrieval system.

It has been successfully developed and commercialized in the 60s and 80s of the 20th century, in information processing technology and communication technology.

Driven by computer and database technology, information retrieval has developed rapidly in various fields such as education, military and commerce, and has been widely used. The Dialog International Online Information Retrieval System is representative of the field of information retrieval during this period and is still one of the most famous systems in the world.

The philosopher Plato pointed out that we identify objects by looking at them. According to statistics, people get information by sight, 20 by hearing, and 10 by touch. The advantages of replacing text with visual to help people search are:

Web retrieval systems have become a new investment hotspot. The network retrieval system is no longer just a retrieval tool, but also an industry, and its commercial interests have become the main driving force to promote the improvement and expansion of the system, and the retrieval and utilization of network information has shifted from public to commercial. Jupitermediametrix, a well-known digital evaluation company in the United States, recently released a research report saying, "The paid add-on service launched by search engine companies is an emerging and promising Internet field, and its development potential is very huge compared to the current sluggish ** advertising market." ”

Correct Answer: A: Intelligent information retrieval.

In information retrieval, users expect to obtain accurate search results with a simple reputation check. Intelligent information retrieval conforms to this requirement, which can simulate the way of thinking of the human brain to a certain extent, analyze the search requests expressed by Yonghe in natural language, and automatically form a retrieval strategy for intelligent, fast and university information retrieval. The intelligent information retrieval system has the ability to understand and learn, can acquire knowledge on the basis of understanding the content of the information, can learn directly from the text, and achieve self-improvement in time.

Information retrieval visualization: the content in the database is visualized in the form of images to display the process, visual retrieval has many advantages, mainly reflected in: it can provide users with richer and more intuitive information; Enables users to make interactive inputs, allows dynamic movement in the information space, allows users to modify the way data is displayed, and enables them to understand their personal preferences for data; Reducing the time spent understanding robust results allows for cluster analysis of astral information, which can help people discover new scientific points; The search results can imitate the network environment to form a topological structure diagram, and all related documents or other types of resources in the topological structure will be classified as the same kind; A transparent search process makes retrieval easier and more efficient.

Personalization of information retrieval: Personalization of information retrieval refers to the personalization of the content and services provided by the retrieval system. With the continuous enhancement of the personalized function of the search tool, users can retrieve information in their favorite way, pre-select their own information personnel, ask questions to the designated information personnel they are interested in, and can limit the search results to improve the search quality.

Information retrieval is the main way for users to query and obtain information, and it is the method and means to find information. Information search in the narrow sense refers only to information search.

Detailed explanation: that is, the user needs to use a certain method to find out the information needed from the information collection with the help of the retrieval tool. Information retrieval in a broad sense is the process of processing, sorting, organizing and storing information in a certain way, and then accurately finding out the relevant information according to the specific needs of information users.

Also known as information storage and retrieval. In general, information retrieval refers to information retrieval in a broad sense.

1.The development of search engine technology: Search engines now not only compare the information queried by users with the information on the network, but also compare the similarity of the information queried by users with the information on the network through more complex technology, so as to find out the information that users want to find more accurately.

2.Changes in search engine algorithms: Search engines now not only use the word frequency statistics method, but also use more complex algorithms, such as the PageRank algorithm, etc., to find out the search results more accurately.

3.Changes in content retrieval: Now search engines can not only search for text, but also search for images, ** and other ** content, as well as documents in a variety of formats, such as pdf, word, etc.

4.Changes in the layout of search engines: Now the layout of search engines is more concise, the search results are more accurate, and the search engine has many intelligent functions, such as intelligent recommendation, personalized recommendation, etc., which can better meet the needs of users.